What event opens the door for esmeralda to get out of Brooklyn and change her life

Explanation:

                   Esmeralda Santiago moved to Brooklyn from Puerto Rico with her mother and several of her brothers and sisters when she was 13, leaving behind her father and life in the country. After being assigned to a class for kids with learning disabilities because she cannot speak English well, she decides that Brooklyn is not the place for her. When her family moves and she changes schools, she is given the chance to write her own ticket.

i believe it is the first choice (1.)

because the major theme is(“both the wild and civilization have rules.”)

and also as u said,( based on what buck learns within the call of the wild, "both the wild and civilization have rules".this is true of humans within society as well.